68553350 divided by 905 
The aim is to understand the frequency of 905 in 68553350.

Advancing to step 1:
If we divide 6 by 905, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 905

Let's proceed to step 2:
The number 905 fits into 68 0 times, leaving a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 68 to get 68.
Take the next digit (5) from the dividend and append it to 68, then repeat: 685 / 905

Going ahead to step 3:
685 divided by 905 is 0 with a remainder of 685.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 685 after subtracting 0 from 685.
Include the next digit (5) from the dividend after 685, then repeat: 6855 / 905

Step 4:
If we divide 6855 by 905, we get 7 and a remainder of 520.
Put 7 as the next digit of the answer. 
Result so far: 7.0
The remainder is 520 after subtracting 6335 from 6855.
Fetch the next digit (3) from the dividend, attach it to 520 and continue: 5203 / 905

On to step 5:
905 goes into 5203 5 times with a remainder of 678.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
Subtract 4525 from 5203 to get 678.
Take the next digit (3) from the dividend and append it to 678, then repeat: 6783 / 905

Step 6:
905 goes into 6783 7 times with a remainder of 448.
Record the quotient 7 as the next digit in the result. 
Result so far: 757.0
Subtracting 6335 from 6783 leaves us with 448.
Append the next digit (5) from the dividend to 448 and continue with: 4485 / 905

Advancing to step 7:
905 can be fit into 4485 4 times, resulting in a remainder of 865.
Write down 4 as next digit of the result. 
Result so far: 7574.0
Deduct 3620 from 4485 and we're left with 865.
Include the next digit (0) from the dividend after 865, then repeat: 8650 / 905

Going ahead to step 8:
8650 divided by 905 is 9 with a remainder of 505.
Record the quotient 9 as the next digit in the result. 
Result so far: 75749.0
If we subtract 8145 from 8650, we get 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

On to step 9:
If we divide 5050 by 905, we get 5 and a remainder of 525.
Use 5 as the next digit of our solution. 
Result so far: 75749.5
Subtracting 4525 from 5050 leaves us with 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Advancing to step 10:
When dividing 5250 by 905, we get 5 with a remainder of 725.
Use 5 as the next digit of our solution. 
Result so far: 75749.55
Deduct 4525 from 5250 and we're left with 725.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7250, and continue the process.

The quotient of the division is 75749.55, and the remainder is 0.725.